A vertical tower is 20 m high from the horizontal ground. The angle of depression of a

ball from the top of the tower is 42°. Calculate the distance, in m, of the ball from the

base of the tower

Sam has $24 in his wallet. He pays $8 to have his car washed. Which expression represents this situation? a. - 24 + (-8) b. - 24 + 8 c. 24 + (-28) d. 24 + 8

A weather station on the top of a mountain reports that the temperature is currently 0 Celsius and has been falling at a constant rate of 3 celsius per hour find each temperature

John has grades of 82 and 98 on his first two history tests. What must he score on his third test so that his average is at least 88 ?

What is 4/7 plus 1 1/3

Write 3 3/5 as an improper fraction

May can swim one lap in 6.089 seconds, and Sarah can swim one lap in 6.098 seconds. Write an equation to compare their speeds.

How do I solve systems of equations using elimination?

Which of the following is a polynomial with roots 2, 3i, and - 3i? A. f (x) = x^3 - 2x^2 + 6x - 9 B. f (x) = x^3 - 6x ^2 + 9x - 18 C. f (x) = x^3 - 6x^2 + 18x - 2 D. f (x) = x^3 + 2x^2 + 9x - 18

The surface area "S" of a cube with side length e is S = 6e^2. Find the side length of a cube with a surface area of 150 cm.

A farmer hears a weather report saying that temperatures will be decreasing approximately 6∘ 6∘ every hour for the next 5 hours. What signed number represents the total change in temperature expected over the next 5 hours